Mrjmegson
Well-known member
That's a crazy high power single phase.
East West system two inverters two batteries ?
- Thread starter bladerunnerpv
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bladerunnerpv
Well-known member
I don't know MrJ, I have not checked, their batteries are v.close to pylontech voltage though IIRC. I too like the idea of using them as they appear to be more british
bladerunnerpv
Well-known member
Hi Kot, yes aware of this one thanks.
The spec doesn't read like a hybrid inverter to me as there's no battery output figures. I'm inclined to think it's AC-coupled?
Also it would need to use their optimisers and a Storedge + LG Chem Resu High voltage batteries IIUC, not one of the cheapest overall solutions, but no harm taking another look.
bladerunnerpv
Well-known member
bladerunnerpv
Well-known member
indeed, mine too! I seem to remember a link to some aussie tests done on batteries which Johnb2713 provided which put me off LG batteries somewhat, but can't remember now if they were the HV onesthat's new to the range, not seen that unit before. Only trouble with Solaredge is you are tied to expensive batteries, LG Chem I think, which are very nice, but offend my liking of 'value for money'
The SolarEdge Energy Bank offers a high voltage, DC-coupled storage solution, optimised to integrate with the existing SolarEdge residential system. In addition to the gain in efficiency associated with high voltage DC storage - due to efficient DC-DC conversion and no DC-AC changes - by optimising the Energy Bank specifically for SolarEdge inverters and StorEdge interfaces, the system is able to maximise storage of solar generated power.Yes, just seen this for the first time today too, BAT-05K48, but brochure indicates optimised for used with a three-phase inverterperhaps we'll see other compatible inverters?
says "Optimized storage solution for SolarEdge Home Hub Inverter - Three Phase with Backup"
A SolarEdge integrated storage solution means that PV generation, storage, EV charging and smart device control will all be managed and monitored on one platform - the SolarEdge app - for both smoother installations and ease of use by the resident.
The Energy Bank comes with a 10 year warranty, with a minimum of 70% capacity at the end of the warranty period after an unlimited number of discharges - for more warranty information please see the Warranty download on the right.
Features:
- Currently only compatible with SetApp Enabled 1ph HD Wave inverters, from 2,200 - 10,000.
- DC coupled - high effiency and no G99 application required if using a G98 compliant inverter
- Super quick installation - just DC cables from inverter to battery (comms are wireless)
- Extremely flexible installation - battery can be 50m from the inverter and outdoors
BAT-10K1PYes, just seen this for the first time today too, BAT-05K48, but brochure indicates optimised for used with a three-phase inverter
says "Optimized storage solution for SolarEdge Home Hub Inverter - Three Phase with Backup"
bladerunnerpv
Well-known member
Hmmm, there's a solaredge 10kW battery BAT-10K1PS0B-02
"Currently only compatible with SetApp Enabled 1ph HD Wave inverters, from 2,200 - 10,000."
"DC coupled - high effiency and no G99 application required if using a G98 compliant inverter"
Interestingly the 10yr warranty says 70% retention at 10yrs, unlimited cycles, provided ambient temperature 0-40C for >=95% of warranty period. Not seen unlimited cycles quoted anywhere before.
A snip at ~£7300 plus another £1000 to £1500 (guess) for an HD-wave inverter and let's say 20 P404 optimisers at ~£50 ea is at least another round £1000.
Total £10k-ish at wholesale prices, plus various other gubbins, like some panels maybe??!!!
2x Givenergy 5kW hybrid + 9.5kWh = ~£7000
They're not quite equivalent as I think the charge rate is less for the Giv but solaredge looks like a few years longer for payback at first sight.
"Currently only compatible with SetApp Enabled 1ph HD Wave inverters, from 2,200 - 10,000."
"DC coupled - high effiency and no G99 application required if using a G98 compliant inverter"
Interestingly the 10yr warranty says 70% retention at 10yrs, unlimited cycles, provided ambient temperature 0-40C for >=95% of warranty period. Not seen unlimited cycles quoted anywhere before.
A snip at ~£7300 plus another £1000 to £1500 (guess) for an HD-wave inverter and let's say 20 P404 optimisers at ~£50 ea is at least another round £1000.
Total £10k-ish at wholesale prices, plus various other gubbins, like some panels maybe??!!!
2x Givenergy 5kW hybrid + 9.5kWh = ~£7000
They're not quite equivalent as I think the charge rate is less for the Giv but solaredge looks like a few years longer for payback at first sight.
bladerunnerpv
Well-known member
So, question posed:
"System with two hybrid inverters? Joint single battery or two batteries?
Hello, I have east-west facing roofs on my house, each of which can fit around 4.4kWp potentially.
I would like to know if it's possible to use one 5kW hybrid inverter per roof, both roofs feeding energy into one 10kW battery. OR is it possible to use one battery for each inverter and discharge both batteries in a sensible controlled manner to supply PV to house, or to grid. I there some connecting cable communicating between the inverters and/or the batteries for example. Thanks, homeowner."
Took a while for a reply, but given how busy things are that's fine, at least they made the effort which is commendable
Response
"You should be able to have both feeding the one battery, so long as the voltage is not exceeded - please check this with your installer."
I would indeed leave this to those that know better!
I confess it's interesting to see if I can understand it myself tho...
hmmm, need to do a bit more research to get my head around it !!!
Mrjmegson
Well-known member
Interesting reply.
How would you run cables from one battery to two inverters?
How would you run cables from one battery to two inverters?
It will depend a lot if the inverters can work together with comms. I can see an issue with BMS communicating to two inverters under many different circumstances. I dont see how two inverters to one battery would cause voltage issues, I CAN see how it may cause current issues. I suspect the respondent doesnt really know what theyre talking about.
Caveat Emptor!
bladerunnerpv
Well-known member
Bit more digging found this....
https://kb.givenergy.cloud/article.php?id=69&oid=2
the FAQ says (dated May 2022)
"You can have up to 5 batteries per inverter. If you wish to increase the power output to the property you can use multiple AC coupled inverters with batteries connected to each. We do not recommend this for hybrid inverters currently".
https://kb.givenergy.cloud/article.php?id=69&oid=2
the FAQ says (dated May 2022)
"You can have up to 5 batteries per inverter. If you wish to increase the power output to the property you can use multiple AC coupled inverters with batteries connected to each. We do not recommend this for hybrid inverters currently".
I'm currently running two Givenergy hybrid inverters and two Gen2 batteries for an East West split. Each side is independent of each other and charges/discharges fine to the house as demand requires.
bladerunnerpv
Well-known member
That's veerrry interesting 94JDH!
So the two hybrid inverters have no comms between them anywhere? How are the CT's positioned?
Do you have a schematic you'd be happy to share pls?
So the two hybrid inverters have no comms between them anywhere? How are the CT's positioned?
Do you have a schematic you'd be happy to share pls?
Have you altered any settings to prevent the inverters fighting each other?
No settings other than Eco and timed charged for Octopus Go set for each inverter between 00:00 and 04:29. Inverters and Batteries are in the garage with a Cat6 armoured cable to the house. Here each inverter has its own EM115 and that's basically it.
sorry didn't respond earlier, been away.
I'll have a look if I was sent any updated schematics, originally they were going to loop the two inverters together but I was advised by someone else with a similar set up (on the Givenergy official forums) to keep everything separate which seems to be working well for them as well. I've also been checking the data on the web portal.
When home I'll take a look at the CT's positions in the house.
bladerunnerpv
Well-known member
No worries about responding, we all have real life to deal with 
Thanks for the update
Thanks for the update
